Do I need a backflow restrictor in kitchen faucet?

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geekIT

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#205443 13-Nov-2016 16:47

I think my kitchen faucet has been incorrectly installed. It'll run full hot and full cold but is very touchy to try and get a mix of hot and cold. (System is equal low pressure)

I'm wondering if it could need a backflow restrictor.

I'm only guessing this because I installed the bathroom faucet myself and the kit included a restrictor. It mixes without problems.

Am I right in this assumption? If so, which line does the restrictor go in?

Thanks :-)

Trump crowned? No faux King way!

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Aredwood

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#1670295 13-Nov-2016 20:56

Since you have a vent pipe on the roof from your hot water cylinder. You definitely have low pressure hot water. There will most likely be a flow restrict or in the end of the spout. Remove it. Then install a valve in the cold pipe to the mixer. Turn on mixer with handle in center. Adjust valve on cold pipe until water is warm with handle in center.

Aredwood

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#1671630 16-Nov-2016 00:10

Unless it is one of these

It will be restricting the flow. And most aerators nowdays have inbuilt flow restrictors in them. Due to the water efficiency rules. As for the valve in the inlet line - I said use an on / off valve only so you can easily adjust it.